Tnesses



(No Model.)

M GUIRE. STOVE PIPE THIMBLE.

Patented July 24, 1883.

I TE] F1 /ziwiijmn iE-g WITNESSES UNITED STATES PATENT ()Frrcia MICHAEL MCGUIRE, OF BALDWVINSVILLE, NEIV YORK.

STOVE-PIPE TH IMBLE.

SPECIFICATION forming part of Letters Patent No. 281,710, dated July 24, 1883.

Application filed December 15, 1882. (No model.)

Baldwinsville, in the county of Onondaga in the State of New York, have invented new and useful Improvements in Stove-Pipe Thin1- bles, of which the following, taken ID00111160- tion with the accompanying drawings, is a full, clear, and exact description.

This invention relates to that class of stovepipe thimbles which are adjustable to different thicknesses of partitions or ceilings, and are composed of telescopic cylindrical sections se- 'cured to two heads, and constrained in a contracted condition by springs connecting said heads.

My improvements consist, first, of a novel means of attaching the cylindrical sections to the heads of the thimble; and, secondly, in novel means for connecting with the heads of the thimble the springs by which the telescopic sections of the thimble are normally held in a contracted condition, all as hereinafter more fully described, and specifically set forth in the claim.

In the accompanying drawings, Figure 1 is a longitudinal section of my improved stovepipe thimble. Fig. 2 is an end view of the same. Fig. 3 is a rear face view of a portion of one of the thimble-scctions, and Fig. 4 is an enlarged sectional View of the attachment of the cylindrical section of the thimble to the head thereof.

Similar letters of reference indicate corresponding parts.

G 0 represent the two telescopic cylindrical sections of the stovepipe thimble, provided with the usual heads, A A, which are 0011- nected with each other by springs s s, which draw the sections 0 0 together longitudinally and bring the heads A' A to bear tightly against opposite sides of the partition or ceiling through which the stove-pipe is to pass. The aforesaid constituent parts of the stovepipe thimble have been constructed and combined in various ways; but thus far their construction has been very expensive, and failed to afford the desired facility of operation and the necessary safety and durability. These defects I overcome, first, by the following improved connection of the cylindrical sections 0 G with the heads A A, which connection I form by providing the said heads with an a11- nular collar, a, projecting from the rear face thereof, intermediately of the inner and outer edges of said face. Upon the external periphery of the collar a is fitted closely the end of the section 0, which is formed with an outward-projecting flange, c, by which it rests against the rear face of thehead A. Said flange,

aside from forming the additional close joint on the head, also serves to stiffen the body of the .cylinder. At the free edge of the flange c the head A is provided with rivet-holes m, formed with a countersink, n, in the rear face of said head. Into the holes m, from the rear of the head A, are inserted rivets w, the heads of which overlap the edge of the flange c. Said rivets are driven into the thimble-head A, so as to force the head of the rivet into the countersink n, and bring said rivet-head flush with the rear face of the flange c. In driving the rivet into the thimble-head, as aforesaid, the rivet-head draws the underlying portion of the flange a into the countersink n. The protruding end of the rivet on the outer face of the thimble-head, being then upset or headed down, securely fastens the cylindrical section 0 on the thimble-head A.

The connection of the spring 8 with the two thimble-heads A A, 1- construct as follows: The head A on one end of the thimble I provide with an aperture, 6, across which is extended a sunken or rearwardly-deflected loop,

f, which is, at both ends, attached to the rear face of the head A. The aperture 0 over said loop allows the latter to be easily cast on the head, and thus forms a simple, cheap, and secure fastening for the spring, which latter is formed with a hook on its end for hooking onto the loop f. The head A on the opposite end of the thimble I provide with a similar aperture, 6, across which projects alug or hook, cast on the rear face of said thimble-head, this hook being also readily cast on said head on account of the opening 6 directly over it. The end of the spring 8, which is to be connected with the thimblehead A, is formed with a ring or eye, a, by which it is connected with the hook The aperture 6 is extended through the inner edge or small periphery of 100 the head A, so as to facilitate the operation of passing the ring a onto the hook 9.

By employing the describcd ring on the end of the spring 3, in conjunction with the hook the danger of laecrating the hand by the ac eidental slipping of the spring from the grasp of the hand in the operation of connecting the aforesaid parts is obviated.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

l. The coinbinationof the head A, provided with the collar a, the cylinder 0, provided with the flange c, and the rivets r,: passing through the head outside of the flange of the cylinder, and bearing with their heads 011 said flange, substantially as described and shown.

2. In combination with the telescopic cylinder C G and springs s, the head A, provided 15' with the aperture 0, and the lug or hook g, projecting across said aperture, substantially in the manner described and shown, and for the purpose set forth.

In testimony whereof I have hereunto signed 20 my name and affixed my sea], in the presence of two attesting Witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 12th day of December, 1882. MICHAEL MCGUIRE. [L. s.]

Vitnesses:

FREDERICK H. Gnms, C. H. DUELL. 

